High torque dual chamber turbine rotor for hand held or spindle mounted pneumatic tool
AssigneeAir Turbine Technology, Inc.
InventorKemma S. Dodds
Life of this patent
Estimating the term…
Abstract
A high torque turbine rotor for a lightweight hand held tool for grinding and polishing having a rotor that includes two separate high pressure air chambers separated by a common housing wall, each air chamber having peripheral air expelling nozzles in a tangential direction to the rotor periphery. The rotor housing is lightweight and increases torque without generally increasing the overall size and weight of the tool housing.
Claims32
A high torque turbine rotor for a hand held or spindle mounted pneumatic tool, comprising:
- a rotor body having an inlet attachable to a high pressure air source, including:
- a first annular chamber;
- a second annular chamber;
- and
- a common inner wall, wherein said first annular chamber and said second annular chamber are separated by said common inner wall;
- said rotor body being cylindrical and including a plurality of tangential peripheral nozzles in fluid communication with said first chamber and said second chamber for expelling high pressure air to rotate said rotor body;
- said inner wall including a central bore for receiving an attachment to a drive shaft.
A rotor body to a high torque turbine rotor, comprising:
- a rotor body including a central bore, and
- said rotor body having a cylindrical outer wall and a central inner wall;
- a front surface, including at least one first annular channel ending in at least one first arcuate channel ending in at least one first circumferential opening;
- said first annular channel having a first groove for fitting a first perforated barrier and said second annular channel having a second groove for fitting a second perforated barrier;
- and
- a back surface, including at least one second annular channel ending in at least one second arcuate channel ending in at least one second circumferential opening.
A hand held pneumatic tool, comprising:
- a high torque turbine rotor body located circumferentially around a primary shaft, wherein the turbine rotor body includes:
- a front wall and a back wall adapted for fitting with an inner wall, each including:
- a central bore;
- the inner wall adapted for fitting with the front wall and the back wall, the inner wall including:
- at least two annular chambers;
- at least one arcuate chamber radiating from the outer portion of each annular chamber;
- a valve o-ring within each annular chamber;
- an annular perforated barrier within each annular chamber located radially outward from the valve o-ring, and
- a central bore.
A hand held pneumatic tool, comprising:
- a high torque turbine rotor having an outer wall and an axis of rotation, means for mounting said turbine rotor for rotation about said axis of rotation on a drive shaft, said turbine rotor having an inner wall and at least two high pressure air receiving chambers, means for directing pressurized air into the two chambers, said turbine rotor having an air passage in each chamber, said air passage ending in tangential nozzles in said outer wall of the rotor, said nozzles directing a pressurized fluid therefrom to impart rotation to said turbine rotor.
A high torque turbine rotor for a hand held or spindle mounted pneumatic tool, comprising:
- means for generating torque with a cylindrical body having an inlet attachable to a high pressure air source, including:
- means for generating torque in a first chamber of said body;
- means for generating torque in a second chamber of said body;
- means for directing pressurized air into the two chambers;
- means for separating said first chamber from said second chamber;
- and
- means connecting said torque generating means to a shaft.
A high torque turbine rotor for a hand held or spindle mounted pneumatic tool, comprising:
- an inlet attachable to a high pressure air source;
- a first annular chamber;
- a first plurality of tangential peripheral nozzles in communication with said first annular chamber;
- a second annular chamber;
- a second plurality of tangential peripheral nozzles in communication with the second annular chamber;
- and
- a common inner wall including a central bore for receiving and attachment to a drive shaft, wherein said first annular chamber and said second annular chamber are separated by said common inner wall.
Dependencies are inferred from the claim text.